Fireproof ceiling or the like.



No. 778,885. PATENTED JAN.s,19o5-. J. NOLTB.

PIREPROOF CEILING OR THEv LIKE.

APPLICATION FILED JULY 29,1904.

Winesses UNITED STATES Patented January 3, 1905.

PATENT OFFICE.

FIREPROOF CEILING OR THE LIKE.

SPECIFICATION forming part of Letters Iatent No. 778,885, dated January 3, 1905.

Application filed July 29, 1904;- Serial No. 218,754.

lb all whom it may concern:

Be it known that I, J OHANNES NOLTE, a subject of the Emperor of Germany, residing at Strassburg, Germany, have invented certain new and useful Improvements in Fireproof Ceilings or the Like; and I do hereby declare the following to be a full, clear, and exact description of my said invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

, My invention relates to an improved construction of ceiling or like structure uniting lightness, strength, and compactness in height. The essential feature distinguishing the new structure from prior constructions of similar nature is ,that the main girders are of flat or plate iron stayed to prevent lateral buckling.

In order to make the invention more readily understood, Ihave illustrated it on the accompanying sheet of drawings, in Which Figure 1 is a plan of aceiling without the concrete filling and floor-boards. Fig. 2 is a section on line A B of Fig. 1. Fig. 3 is asec tion on line C D of Fig. 1, these two figures showing also the under and upper floor-boards. Fig. 4 is a section on the line E F of Fig. 1, drawn to a larger scale, showing also the under floor-boards.

The longitudinal flat iron or iron-plate girders a rest on small iron plates, which lie in the brickwork, or on angle-irons b, riveted to the ends of the girders. The girders a take the place, as it were, of the ordinary beams and are stayed by flat iron transverse girders or binders 0. The latter are riveted to the girders a by means of angles 0, but are of somewhat less height, owing to theirhaving to support the underboarding cl, located between the girders a and nailed to the bridging-joists e, which are likewise secured to the girders a by angles e. Since the space between the iron framework constituted by the girders a and binders 0 is destined to be filled with concrete or the like, which has thus to be carried by the said framework, the binders 0 are stamped and bent, so as to present lateral tongues f, whereby the concrete is given a hold. The concrete filling projects some half inch below the iron framework and incases the whole of the latter, so that rusting is prevented. Since the layer of concrete at the center of the spaces between the girders a and binders c is scarcely half as high as the girders a, the concrete should be worked right up to the edge of the latter, so that the girders are entirely incased. It will be obvious that the concrete may also be prevented from falling by casting it on angle-irons or bolts which are riveted to the bottom of the girders a and binders 0. The space between the layers of concrete and the underboards d is in either case filled with cinders or sand.

Any style of flooring may be laid. on constructions of the above-described nature. In the drawings a parquetry floor g is shown by way of example. ing, such as wood-cement or plates, the joists 6, together with the underboarding d and sand or cinder filling, are dispensed with and the entire space between girders and binders filled up with concrete.

The ceiling is finished off by the application merely of a thin layer of plaster h, whereby economy is effected.

Such structures will be found thoroughly to withstand the influences of the'weather and changes of temperature. A

The invention .may also be applied in the construction of Walls, of horizontal or arched bridge-roofs, in tunnels and sewerage work, and the like.

What I claim is- 1. A fireproof structure, comprising flat iron longitudinal girders, flat iron cross-gird ers riveted thereto and presenting lateral projections, and suitable material filling out the spaces of the framework constituted by the said girders, substantially as described.

2. A fireproof structure, comprising flat iron longitudinal girders, flat iron cross-girders riveted thereto, lateral projections on said cross-girders, and a concrete filling located in the spaces of the framework constituted by.

said girders, and completely inclosing the latter, and projecting somewhat below the same, substantially as and for the purpose set forth.

3. A fireproof structure, comprising fiat iron longitudinal girders, flat iron cross-girders riveted thereto, lateral projections on said cross-girders, suitable material filling out the In some classes of floor spaces of the girder-frame and completely inclosing the latter, and timber cross-joists secured to the longitudinal girders, substantially as described.

4. A fireproof structure, comprising flat iron longitudinal girders, flat iron cross-girders riveted thereto, lateral projections on said cross-girders,'suitable material filling out the spaces of the girder-frame and completely inclosing the latter, timber cross-joists secured to the longitudinal girders, and underboards secured to the said joists, substantially as set forth.

5. A fireproof structure, comprising flat iron longitudinal girders, flat iron cross-girders riveted thereto, lateral projections on said crossgirders, suitable filling material, completely inclos'ing the girder-frame, timber cross-joists secured to the longitudinal girders, and underboards secured to the said joists parallel to the longitudinal girders and registering therewith on the top, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

J OHANNES NOLTE.

W'itnesses:

GUSTAV Scuwnrss, JOSEPH ROHMER. 

